Zedhugh Chen
2fc4b33359
- 重构模块使用新的代码风格 - 老代码 (src 目录下的代码) 继续使用之前的代码风格 通过在需要不同代码风格的目录下放对应 .clang-format 配置文件实现
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
#include "config/loader.h"
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#include <dlfcn.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "base/log.h"
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#include "base/memory.h"
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static char *config_loader_join_path(const char *base, const char *suffix) {
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if (!base || !suffix) return nullptr;
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size_t base_len = strlen(base);
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size_t suffix_len = strlen(suffix);
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char *path = p_new(char, base_len + suffix_len + 1);
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memcpy(path, base, base_len);
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memcpy(path + base_len, suffix, suffix_len + 1);
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return path;
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}
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static bool config_loader_resolve_path(
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char **out_path,
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bool *out_is_explicit,
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const char *override_path
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) {
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const char *path = override_path;
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if (path && *path) {
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*out_path = p_strdup(path);
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*out_is_explicit = true;
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return true;
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}
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path = getenv("ZDWM_CONFIG_LIB");
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if (path && *path) {
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*out_path = p_strdup(path);
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*out_is_explicit = true;
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return true;
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}
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path = getenv("XDG_CONFIG_HOME");
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if (path && *path) {
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*out_path = config_loader_join_path(path, "/zdwm/config.so");
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*out_is_explicit = false;
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return *out_path != nullptr;
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}
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path = getenv("HOME");
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if (path && *path) {
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*out_path = config_loader_join_path(path, "/.config/zdwm/config.so");
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*out_is_explicit = false;
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return *out_path != nullptr;
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}
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return false;
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}
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bool config_loader_load(config_loader_t *loader, const char *override_path) {
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if (!loader) return false;
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config_loader_cleanup(loader);
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bool is_explicit = false;
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if (!config_loader_resolve_path(&loader->path, &is_explicit, override_path)) {
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return false;
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}
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if (access(loader->path, F_OK) != 0) {
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if (!is_explicit) return true;
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warn("config library not found: %s", loader->path);
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config_loader_cleanup(loader);
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return false;
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}
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loader->handle = dlopen(loader->path, RTLD_NOW | RTLD_LOCAL);
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if (!loader->handle) {
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warn("failed to load config library %s: %s", loader->path, dlerror());
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config_loader_cleanup(loader);
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return false;
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}
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dlerror();
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loader->setup = (zdwm_config_setup_fn *)dlsym(loader->handle, "setup");
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const char *error = dlerror();
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if (!error) return true;
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warn("failed to resolve setup from %s: %s", loader->path, error);
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config_loader_cleanup(loader);
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return false;
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}
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void config_loader_cleanup(config_loader_t *loader) {
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if (!loader) return;
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loader->setup = nullptr;
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if (loader->handle) dlclose(loader->handle);
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loader->handle = nullptr;
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p_delete(&loader->path);
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}
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